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CN-121984438-A - Can promote radiating efficiency's two-sided photovoltaic module backplate structure

CN121984438ACN 121984438 ACN121984438 ACN 121984438ACN-121984438-A

Abstract

The invention discloses a back plate structure of a double-sided photovoltaic module, which can improve heat dissipation efficiency and belongs to the field of photovoltaic modules. The double-sided photovoltaic module backboard structure capable of improving heat dissipation efficiency realizes efficient cooling and rapid circulation of heat dissipation liquid by optimizing the internal structural design of a heat exchange cavity, greatly improves the heat dissipation efficiency of the double-sided photovoltaic module, and effectively solves the problem of industrial pain caused by 'temperature rise and attenuation' of the traditional module. The turbulence cavity integrally formed in the heat exchange cavity is matched with the stirring blade driven by the motor, so that the flow of the cooling liquid can be remarkably accelerated, the temperature layering of the cooling liquid in a standing state is broken, the high-temperature cooling liquid can uniformly contact with the cooling component, and the problem of insufficient cooling caused by local overheating is avoided.

Inventors

  • TANG YUFENG
  • WANG YONGZHI
  • YU YUEYANG
  • PAN DONG
  • GAO HAOSEN
  • Che Cuicui

Assignees

  • 山东省工程咨询院

Dates

Publication Date
20260505
Application Date
20260408

Claims (7)

  1. 1. The back plate structure of the double-sided photovoltaic module capable of improving heat dissipation efficiency comprises a supporting rod (1) and is characterized in that fixing frames (2) are fixedly connected to opposite sides of the supporting rod (1), supporting high rods (3) are symmetrically and rotatably connected to right sides of outer side walls of the fixing frames (2), an arc-shaped light guide plate (4) is fixedly connected to opposite sides of the supporting high rods (3) together, and double-sided assemblies (5) are fixedly connected to the inner portions of the fixing frames (2).
  2. 2. The back plate structure of the double-sided photovoltaic module capable of improving heat dissipation efficiency according to claim 1, wherein the double-sided module (5) comprises a front photovoltaic plate (501), a back photovoltaic plate (502) is arranged on the lower surface of the front photovoltaic plate (501), a heat dissipation pipe (503) is fixedly connected between the front photovoltaic plate (501) and the back photovoltaic plate (502), the upper surface of the heat dissipation pipe (503) is in contact with the lower surface of the front photovoltaic plate (501), and the lower surface of the heat dissipation pipe (503) is in contact with the upper surface of the back photovoltaic plate (502).
  3. 3. The back plate structure of the double-sided photovoltaic module capable of improving heat dissipation efficiency according to claim 2, wherein the input ends and the output ends of the two heat dissipation pipes (503) are fixedly connected with a heat exchange cavity (504) together, the output ends of the heat dissipation pipes (503) extend to the inside of the heat exchange cavity (504), the output ends of the heat dissipation pipes (503) are fixedly connected with a unidirectional liquid inlet pump (505), the output ends of the heat dissipation pipes (503) are fixedly connected with a unidirectional liquid outlet pump (506) in the inside of the heat exchange cavity (504), and heat dissipation liquid is stored in the inside of the heat dissipation pipes (503).
  4. 4. The double-sided photovoltaic module backboard structure capable of improving heat dissipation efficiency according to claim 3, wherein a turbulence cavity (507) is integrally formed in the heat exchange cavity (504), a motor (508) is fixedly connected to the rear surface of the heat exchange cavity (504), the output end of the motor (508) extends to the inside of the heat exchange cavity (504), a turntable (509) is fixedly connected, and stirring blades (510) are symmetrically and fixedly connected to the outer side wall of the turntable (509).
  5. 5. The structure of the back plate of the double-sided photovoltaic module capable of improving heat dissipation efficiency as set forth in claim 4, wherein a clamping groove (511) is formed in the upper surface of the inner portion of the heat exchange cavity (504), a heat conducting copper sheet (512) is fixedly connected to the inner portion of the clamping groove (511), and liquid contact copper sheets (513) are symmetrically and fixedly connected to the lower surface of the heat conducting copper sheet (512).
  6. 6. The structure of claim 5, wherein the heat dissipation fans (514) are fixedly connected to the outer side walls of the heat conducting copper sheets (512).
  7. 7. The back plate structure of the double-sided photovoltaic module capable of improving heat dissipation efficiency as set forth in claim 6, wherein a protective mesh enclosure (515) is covered on the outer side of the heat dissipation fan (514), the protective mesh enclosure (515) is fixedly connected with the heat conduction copper sheet (512), the protective mesh enclosure (515) is made of corrosion-resistant metal materials, and the surface of the protective mesh enclosure is subjected to oxidation-resistant treatment.

Description

Can promote radiating efficiency's two-sided photovoltaic module backplate structure Technical Field The invention relates to the field of photovoltaic modules, in particular to a back plate structure of a double-sided photovoltaic module, which can improve heat dissipation efficiency. Background Under the promotion of global energy transformation and 'double carbon' strategy, solar energy is used as clean renewable energy, the application of a photovoltaic module is wider, and the double-sided photovoltaic module has higher photoelectric conversion potential compared with the traditional single-sided module because the double-sided photovoltaic module can simultaneously utilize direct light on the front side and reflected light on the back side for power generation, so that the double-sided photovoltaic module has become an important development direction of the photovoltaic industry. However, when the photovoltaic module works, a large amount of solar radiation is converted into heat, so that the temperature of the module is increased, and according to researches, the output power is reduced by about 0.4% when the working temperature of the module is increased by 1 ℃, and the problem of temperature rise and attenuation seriously restricts the performance and the service life of the double-sided photovoltaic module. The existing double-sided photovoltaic module has the defects that the heat dissipation structure is more simple, the natural heat dissipation or single heat dissipation mode is adopted, the heat dissipation efficiency is low, the heat generated by the front and back double-sided photovoltaic panels cannot be taken away rapidly, the surface temperature of the module can be increased to be more than 70 ℃ especially in a high-temperature environment in summer, the photoelectric conversion efficiency is greatly reduced, the ageing of the internal elements of the module can be accelerated, and the service life is shortened; Meanwhile, the existing heat exchange structure is lack of a high-efficiency cooling mechanism for cooling the heat dissipation liquid, the circulation speed of the heat dissipation liquid is low, the cooling is insufficient, heat dissipation components are easily corroded by the external environment, the heat dissipation stability and the structural durability are further affected, the requirements of long-term stable and high-efficiency operation of the double-sided photovoltaic module cannot be met, and therefore the double-sided photovoltaic module backboard structure which can efficiently dissipate heat, is stable in structure and long in service life is developed to be the technical problem to be solved currently urgently. Disclosure of Invention The invention aims to solve the problems that the existing double-sided photovoltaic module has a single radiating structure and low radiating efficiency, and can not quickly take away heat generated by the front photovoltaic panel and the back photovoltaic panel, so that the temperature of the module is too high, the photoelectric conversion efficiency is reduced and the service life is shortened, realize the remarkable improvement of the radiating efficiency and ensure the stable operation of the module at a proper temperature. The invention also aims to solve the problems of insufficient cooling of the cooling liquid, low circulation speed, easy corrosion of the cooling part and short service life of the existing heat exchange structure, and the heat exchange cavity structure is optimized to enhance the cooling effect of the cooling liquid, improve the heat dissipation stability, prolong the whole service life of the structure and reduce the maintenance cost. According to the technical scheme, the back plate structure of the double-sided photovoltaic module capable of improving heat dissipation efficiency comprises support rods, wherein fixing frames are fixedly connected to opposite sides of the support rods, supporting high rods are symmetrically and rotatably connected to right sides of outer side walls of the fixing frames, an arc-shaped light guide plate is fixedly connected to opposite sides of the supporting high rods together, and double-sided modules are fixedly connected to the inner sides of the fixing frames. Still further, the double-sided assembly is including the front photovoltaic board, the lower surface of front photovoltaic board is provided with the reverse side photovoltaic board, the front photovoltaic board with fixedly connected with cooling tube between the reverse side photovoltaic board, the upper surface of cooling tube with the lower surface of front photovoltaic board contacts, the lower surface of cooling tube with the upper surface of reverse side photovoltaic board contacts. Furthermore, the input end and the output end of the two radiating pipes are fixedly connected with a heat exchange cavity together, the output ends of the radiating pipes extend to the inside of the heat exchange cavity, an